Improved die for forging ox-shoes



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HORACE COLBURN, OF STAFFORD, ASSIGNOR TO HIMSELF AND' SYLVES- TER COLBURN, OF ANSONIA, CONNECTICUT.

Letters Patent No. 102,372, dated April 2li, 1870.

IMPRO'VED DE FOR FQRGING- OX-SHOIES.

The Schedule referred to in these Letters Patent and making part of the same To all whom it may concern:

Figure 2, a transverse section, in position for introducing the blank; and in Figure 3, a transverse section, as when the blow is struck. p

This invention relates to the construction of dies for the manufacture of ox-shoes; and

It consists in a die for giving the requisite curve or edge shape to the blank, and a second die into which the curved blank is placed and struck into the required forni, and partially or entirely perforated for the nails.

I represent the two dies as formed in one and fthe same piece; but this is not essential.

A, the rst diev is shaped upon its upper surface so as to give the requisite curve'to the heel of the shoe.

A follower, curved to correspond to the external edge `of the shoe, is struck down upon -the blank, bringing it to the form denoted in broken lines ou the die in fig. 1.

B is the base ofthe second dic.

C, the die proper, supported on the base and held slight-ly above by springs (l, the said die being Wrought into the shape for the under side of the shoe, as denoted in iig. l, and around the outer edge of the die is a flange, d, projecting up from the bedv through a corresponding recess in the die C, the upper edge of this flange l being provided with punches, j, as seen in fig. 1, for the purpose of perforatiug thc shoe for the nails.

The blank, after having been formed on the die is laid into the die O while in a properly heated state, and the depth of the die at its outer edge is equal to or little more than the outer edge of the blank, so that the metal which is struck by the flat face of the drop or hammer spreads into the broad part of the shoe, the die settling down upon thek bed, asseen in iig.

partiallyperforates the shoe for the nails, and the action of the flange tends to till the outer edge of the shoe, and thus the whole is formed in the most perfect manuel;

-The object in arranging the die C upon the spring is two-fold: l

First, that the die shall be raised above the Bange, so as to permit the blank to drop below the surface upon the outer edge, and this prevents the formation of a fili upon the outer edge and the consequent necessity of trimming. p y v l Secondly, to raise the die from the flange after the shoe's formed. Hence, to dispense with the springs and lmake the die solid may necessitate trimming the dies.

I, therefore, do not wish to Vconfine myself to the die C upon springs.

I claim as my invention- The two dies A and C, the die C provided with a ledge, f, to form the groovefand perfor-ations, and coustructed substantially as herein described.

HORACE COLBURN.

Witnesses a E. D. DAvIsoN, T. C. P noUTY.

The flange cl extends up and forms the groove and 

